Use constexpr TaskTraits constructor in chrome.

chrome/browser/prefs/incognito_mode_prefs.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 183 matching lines @@
       return false;
   }
 }
 
 #if defined(OS_WIN)
 // static
 void IncognitoModePrefs::InitializePlatformParentalControls() {
   // TODO(fdoray): This task uses COM. Add the WithCom() trait once supported.
   // crbug.com/662122
   base::PostTaskWithTraits(
-      FROM_HERE, base::TaskTraits().MayBlock().WithPriority(
-                     base::TaskPriority::USER_VISIBLE),
+      FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
       base::Bind(
           base::IgnoreResult(&PlatformParentalControlsValue::GetInstance)));
 }
 #endif
 
 // static
 bool IncognitoModePrefs::ArePlatformParentalControlsEnabled() {
 #if defined(OS_WIN)
   return PlatformParentalControlsValue::GetInstance()->is_enabled();
 #elif defined(OS_ANDROID)
@@ skipping 13 matching lines @@
   bool valid = IntToAvailability(pref_value, &result);
   DCHECK(valid);
   if (result != IncognitoModePrefs::DISABLED &&
       mode == CHECK_PARENTAL_CONTROLS && ArePlatformParentalControlsEnabled()) {
     if (result == IncognitoModePrefs::FORCED)
       LOG(ERROR) << "Ignoring FORCED incognito. Parental control logging on";
     return IncognitoModePrefs::DISABLED;
   }
   return result;
 }